Regex question

[Craig Daters]

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On Jun 28, 2005, at 2:45 PM, Alex Neuman van der Hans wrote:

> Craig Daters wrote:
>
>>
>> On Jun 28, 2005, at 7:38 AM, Rick Cooper wrote:
>> <--snipped for cleanliness sake-->
>>
>>>> messages is not a problem. I have been feeding all of these to the
>>>> Baysian database to bring their scores up to an acceptable level, 
>>>> and
>>>> I
>>>> will certainly add a rule as well for SpamAssassin. I would prefer 
>>>> to
>>>> stop these at the MTA level entirely and save to CPU power this 
>>>> would
>>>> otherwise generate, but this is a start.
>>>>
>>>>

<--snipped for cleanliness sake-->

>>
>>> There are, of course, more dealing with relaying and so forth but for
>>> the
>>> most part I have relatively few things that we definatly do not want,
>>> pass
>>> through to MS to deal with, and I haven't generated a bounce in so
>>> long I
>>> couldn't tell you the last time. Drop the stuff you *know* shouldn't
>>> arrive
>>> and let MS handle filename, type, archives, bad content, the marginal
>>> spam,
>>> etc.
>>
>>
>> I am using Sendmail 8.13.1-2 (RHEL RPM) for my MTA. I like what you 
>> are
>> saying here. I don't know how difficult these will be to implement. I
>> have enabled Sendmail's option to not accept mail from non-FQDN
>> sources, And I have blacklisted a couple of countries that have sent 
>> us
>> spam in the past that I know we would never receive legitimate email
>> from, but that is all.
>>
> How do you block mail from non-fqdn sources, exactly? Any url's to a
> page showing examples? Thanks...
> --
>

Using Sendmail, simply commenting out the option in your sendmail.mc 
file:

FEATURE(`accept_unresolvable_domains')dnl

is supposed to do the trick.

- ---
Craig Daters (craig at westpress.com)
Systems Administrator

West Press
1663 West Grant Road
Tucson, Arizona 85745

(520) 624-4939 x208
(520) 624-2715 fax
www.westpress.com

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